Scalable Secret Key Generation for Wireless Sensor Networks

Future sensor networks require energy and bandwidth efficient designs to support the growing number of nodes. The security aspect is often neglected due extra computational burden imposed on In this article, we propose a secret key generation method for wireless by using physical layer features. This based superposition property channels. proposed exploits multiple access channel with simultaneous transmissions as in analog function computation technique solve latency scarce problems highly populated dense networks. All nodes use same time frequency block provide scalability that xmlns:xlink="http://www.w3.org/1999/xlink">linearly proportional also benefits from network density against eavesdroppers aim sniff channel. analytically studied. Moreover, their application layers investigated. presented results have shown there tradeoff between total power consumption used generation. Lastly, error probability generated keys thermal noise estimation investigated computer simulations compared broadcasting-based benchmark model.